A New York Times bestselling mathematician reveals how math can take your game playing and puzzle solving to the next level.“A thrilling tour of all the ways you can win with math.” —Matt Parker, author of the international bestseller Humble Pi“A winning book by a winning personality.” —Ben Orlin, author of Math Games with Bad Drawings...

The history, formulas, and most famous puzzles of graph theoryGraph theory goes back several centuries and revolves around the study of graphs—mathematical structures showing relations between objects. With applications in biology, computer science, transportation science, and other areas, graph theory encompasses some of the most beautiful formulas in mathematics—and some of its most famous problems. The Fascinating World of Graph Theory explores the ques...

I'm so worried over Gloria, Professor Kennedy, that I hardly know what I'm doing." Mrs. Bradford Brackett was one of those stunning women of baffling age of whom there seem to be so many nowadays. One would scarcely have believed that she could be old enough to have a daughter who would worry her very much. Her voice trembled and almost broke as she proceeded with her story, and, looking closer, I saw that, at least now, her face showed marks of anxiety that told on her more than would hav...

I am not by nature a spy, Professor Kennedy, but—well, sometimes one is forced into something like that." Maude Euston, who had sought out Craig in his laboratory, was a striking girl, not merely because she was pretty or because her gown was modish. Perhaps it was her sincerity and artlessness that made her attractive. She was the daughter of Barry Euston, president of the Continental Express Company, and one could readily see why, aside from the position her father held, she should be am...

Until I receive those materials from Doctor Leslie to make the poison tests, considered Kennedy, as we walked slowly the few blocks to the laboratory, "I can't see that there is much I can do but wait." In his laboratory, he paused before his well-stocked shelves with their miscellaneous collection of books on almost every conceivable subject. Absently he selected a volume. I could see that it was one of the latest translated treatises on this new psychology from the pen of the eminent sci...

As I look back now on the sensational events of the past months since the great European War began, it seems to me as if there had never been a period in Craig Kennedy's life more replete with thrilling adventures than this. In fact, scarcely had one mysterious event been straightened out from the tangled skein, when another, even more baffling, crowded on its very heels. As was to have been expected with us in America, not all of these remarkable experiences grew either directly or indire...

This early work by Arthur Benjamin Reeve was originally published in 1912 and we are now republishing it with a brand new introductory biography. Reeve's short story "The Bacteriological Detective" explores a mysterious and suspicious case of typhoid in New York, to be solved through immunization records and handwriting analysis. Arthur Benjamin Reeve was born on 15th October 1880 in New York, USA. Reeve received his University education at Princeton and upon graduating enrolled at the New...

This early work by Arthur Benjamin Reeve was originally published in 1912 and we are now republishing it with a brand new introductory biography. "The Unofficial Spy" has detective Craig Kennedy dealing with a mysterious death in a hotel. Arthur Benjamin Reeve was born on 15th October 1880 in New York, USA. Reeve received his University education at Princeton and upon graduating enrolled at the New York Law School. However, his career was not destined to be in the field of Law. Between 191...

This early work by Arthur Benjamin Reeve was originally published in 1914 and we are now republishing it with a brand new introductory biography. 'The Forger' features super-sleuth Professor Craig Kennedy who is sometimes referred to as "The American Sherlock Holmes" due to his astounding ability at crime solving and his Watson-like sidekick Walter Jameson, a newspaper reporter. In 'The Forger,' Kennedy has to solve a case involving forged checks. Arthur Benjamin Reeve was born on 15th Oct...

This early work by Arthur Benjamin Reeve was originally published in 1912 and we are now republishing it with a brand new introductory biography. In "The Sand-Hog" popular detective Craig Kennedy investigates evil deeds committed during the construction of a tunnel. Arthur Benjamin Reeve was born on 15th October 1880 in New York, USA. Reeve received his University education at Princeton and upon graduating enrolled at the New York Law School. However, his career was not destined to be in t...

This early work by Arthur Benjamin Reeve was originally published in 1912 and we are now republishing it with a brand new biography. "The Diamond Maker" is a story of synthetic diamonds and a con man. Arthur Benjamin Reeve was born on 15th October 1880 in New York, USA. Reeve received his University education at Princeton and upon graduating enrolled at the New York Law School. However, his career was not destined to be in the field of Law. Between 1910 and 1918 he produced 82 short storie...

This early work by Arthur Benjamin Reeve was originally published in 1912 and we are now republishing it with a brand new introductory biography. "The Firebug" has Kennedy solve a case of multiple arsons in department stores, with the help of some taunting notes sent to the fire chief. Arthur Benjamin Reeve was born on 15th October 1880 in New York, USA. Reeve received his University education at Princeton and upon graduating enrolled at the New York Law School. However, his career was not...